The T4XT1 from Sonoma Scientific is a RF & Microwave Isolator with Frequency 4.5 to 4.8 GHz, Average Power 10 W, Average Power Forward 10 W, Insertion Loss 0.5 dB, Isolation 20 dB. Tags: Module with Connectors, Coaxial Isolator. More details for T4XT1 can be seen below.